Cigarette tube and apparatus for making such tubes



March 24, 1936. I B. AIVAZ 2,035,211

CIGARETTE TUBE AND APPARATUS FOR vMAKING SUCH TUBES Filed Sept. 5, 1933Patented Mar. 24, 1936 UNITED STATES CIGARETTE TUBE AND APPARATUS FORMAKING SUCH TUBES Boris Aivaz, Budapest, Hungary Application September5, 1933, Serial No. 688,246 In Hungary September 17, 1932 3 Claims.

The invention relates to cigarette tubes which prior to filling arefurnished with a filter wad or plug consisting of a multiple strip of aplurality of thicknesses of corrugated or crepe paper wound into a loosespiral.

In filling cigarette tubes equipped with smoke filter plugs, the defecthas been observed that the smoke filter plug is liable to be ejected bythe plunger of the cigarette filling machine.

In order to avoid this the present invention proposes a cigarette tubewhich has a smoke filter plug which is cemented into the tube prior tofilling the latter.

The invention also relates to an arrangement for making such tubes andcomprising a device for applying adhesive which comes into operationintermittently and is disposed between a device for winding or producingthe filter plug and an arrangement for filling the cigarette, saidadhesive applying device applying to the compressed smoke filter plugprior to its introduction into the cigarette tube a drop of adhesivewhich comes into contact with the tube solely on the expansion of thecompressed smoke filter plug on introduction so that a premature wipingoff or spreading of the adhesive is avoided.

During the application of the adhesive the plug is supported by a sleevewhich is associated with the mandrel carrying the tube and islongitudinally slotted the diameter of the cavity of the sleeve beingsmaller than the plug.

The ejection of the plug from the sleeve and its introduction into thetube is efiected preferably by a blade which is rocked intermittentlyinto the path of the sleeve and which on the return motion of the sleeveretains the plug and thrusts it into the tube. The plug released fromthe sleeve passes during its expansion into the tube and is securedthereto by the adhesive.

The drawing represents by way of example an embodiment of the inventionwith reference to the manufacture of cigarette tubes with smoke filterplugs.

Fig. 1 shows a plan view of the device for applying adhesive.

Fig. 2 an endview of the adhesive container.

Fig. 3 a front view corresponding to Fig. 1 with the supporting mandrelfor the sleeve displaced outwardly.

Fig. 4 is a front view corresponding to Fig. 3 in that position of thecomponents which they assume at the moment of application of adhesive.

Figs. 5 and '7 show the supporting mandrel carrying the tube and thefilter plug surrounded by the sleeve as well as the ejecting blade intwo difierent positions.

Fig. 6 shows a plan view of the mandrel with the blade omitted.

Figs. 8-9 show details of the adhesive apply- 5 ing device and Fig. 10is a side view of the sleeve coacting with the mandrel.

Fig. 11 shows the finished product, namely the cigarette tube with smokefilter plug cemented in. 10

By means of the plunger l2 the smoke filter plug l l is slid from thewinding device ll], Figs. 1 and 3, which device is known per se, intothe cavity of a sleeve 23 which is integral with the supporting mandrelI3. In its previous advance 15 this mandrel l3 had carried along with itthe cigarette tube I4 in the direction of the arrow Fig.1. In thevicinity of the winding device In is the adhesive container I, Figs. 1and 2, the front wall 5 of which has an opening through which projectsthe adhesive supplying disc 2 which is rotatable about the horizontalaxis 4. On its periphery the disc 2 is provided with a continuous groove3, Figs. 8 and 9. By means of the ratchet wheel 1 an intermittent motioncan be imparted to the shaft 4. In each position of rest of the disc 2 adrop of adhesive I1 is applied to the side of the plug II.

The sleeve 23 has a longitudinal slot I6, Fig. 10, which extends throughto the cavity [5 of the sleeve and is continued along the mandrel I3,Fig. 6.

The diameter of the cavity of the sleeve [5 is somewhat smaller thantheouter diameter of the plug II and the inner diameter of the tube 5 I4so that the plug II is held in the compressed state in the sleeve 23 andexpands as soon as it leaves the sleeve.

On the opposite side of the adhesive applying device to the windingarrangement I0 is disposed a blade I8 which pivots about-a pin [9 andswings from its highest position, Fig. 4, into the working position,Fig. 5, as soon as the sleeve 23 together with the plug II which isresiliently compressed within its cavity has again advanced after theapplication of the drop of adhesive I1 and has arrived in the positionshown in Fig. 3. Then the sleeve 23 together with mandrel l3 againpasses to the right the blade [8 entering in the slot l6 and ejectingthe plug II from the 5 sleeve 23 and stripping the tube M from themandrel l3. In this operation the drop of adhesive I1 is not smearedbecause it cannot pass into contact with the tube Hi. It is only whenthe plug ll emerges from the cavity l5 of the sleeve 23 that it expandsin consequence of its elasticity and is urged against the inner wall ofthe tube l4 and is secured in position therein by the adhesive (Fig.11).

What I claim is:-

1. Apparatus for producing cigarette tubes having smoke filter plugscemented thereon, comprising a movable mandrel for supporting the tube,a longitudinally-slotted hollow supporting device for the plug, movablesimultaneously with the said supporting mandrel, and an adhesiveapplyingdevice comprising an intermittently movable disc applying a drop ofadhesive to each plug through the slot while the plug is in position inthe longitudinally slotted supporting device, the hollow of whichsupporting device is of smaller diameter than the outer diameter of thep 2. Apparatus for producing cigarette tubes having smoke filter plugscemented thereon, comprising a movable mandrel for supporting the tube,a hollow supporting device for the plug in the form of a sleeve integralwith said mandrel, the said supporting device and the adjacent portionof the mandrel being longitudinally slotted, and an adhesive-applyingdevice comprising an intermittently movable disc applying a drop ofadhesive to each plug through the slot while the plug is in position inthe longitudinally slotted supporting device, the hollow of saidsupporting device being of smaller diameter than the outer diameter ofthe plug.

3. Apparatus for producing cigarette tubes having smoke filter plugscemented thereon, comprising a movable mandrel for supporting the tube,a hollow supporting device for the plug in the form of a sleeve integralwith said man- --drel, the said supporting device and the adja-

